those are facts. >> reporter: but today brought another blockbuster revelation, a still top secret nsa program leaked by edward snowden to a british newspaper that it says allows u.s. analysts to snoop on, quote, nearly everything a user does on the internet in real time. the guardian story provides a 32-page training guide, showing how the so called x key score program works, sucking up data from 150 sites around the world that can show phone calls, e-mails being written, sites being visited, words being searched. snowden discussed the surveillance program when his story erupted last month. >> i sitting at my desk certainly have the authorities to wire tap anyone. >> reporter: it was a story that brought vehement denials. >> i think he was lying. >> it wouldn't just surprise me, it would shock me. >> reporter: we spoke to the reporter who broke the story today from brazil. >> one of the problems with allowing an agency to engage in these extraordinary activities is that they're able to say whatever it is they want about what they're doing with no accountability. >> reporter: today the